New York attorney record · Judicial Dept 3
Shannon Casey O'Brien
Georgetown University Law Center alumna, admitted to the New York bar in 2015, registered office in Boston, MA. This record's status, address, and registration history come straight from the NY Office of Court Administration.
- 2015
- Admitted
- 11
- Years in bar
- 5330998
- NY reg #
The record in one line
Admitted in 2015, Shannon Casey O'Brien has built 11 years of active New York practice - more tenure than 25% of the state's currently-active attorneys.
- 11 yrs
- in active practice since admission
- Active
- current bar status: "Currently registered"
- #2016 of 2,912
- by tenure in Boston office peers
- Law school
- Georgetown University Law Center
Data updated September 2026
What this profile tells you
Bar status & tenure
Bar number 5330998 on the New York register belongs to Shannon Casey O'Brien, currently in active standing. Registration is recorded within Judicial Department 3, the appellate division overseeing this attorney's home district.
Practice context & education
Practice address is listed under Charlesbank Capital Partners, located in Boston, MA, ZIP 02116. 2 other attorneys share this firm affiliation in the registry. Educational background: Georgetown University Law Center (11,693 registered alumni).
State context & due diligence
Shannon Casey O'Brien is currently part of the New York bar's active cohort, a group the breakdown below sizes against the full register.
Experience vs. the active New York bar
11 years into an active New York practice since a 2015 admission, Shannon Casey O'Brien sits here on the statewide experience curve - taller bars hold more attorneys at that experience level.
11 years on the New York bar
Years since admission, all currently-active NY attorneys
11 Top 75% higher than 25% of 290,787 active NY attorneys
Each bar is a band; taller bars hold more active NY attorneys. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.
Source NY Office of Court Administration, Attorney Registration · September 2026
Tenure among Boston, MA office peers
Shannon Casey O'Brien's 11-year NY register tenure places mid-pack in Boston, MA: rank #2,016 of 2,912 office peers (69th percentile). See the Boston attorney directory .
- Local rank
- #2,016
- City cohort
- 2,912
- Local percentile
- 69th
- Admitted
- 2015
Nearest tenure peers in Boston
- Esther Adzhiashvili admitted 2015 · 11 yr
- Sarah Burnett Affel admitted 2015 · 11 yr
- Sifat Ahmed admitted 2015 · 11 yr
- Mary Constance Ambacher admitted 2015 · 11 yr
How local rank is computed
Rank uses years since NY-bar admission among non-deceased registry rows that list the same office city and state, a local placement, not a statewide claim. Source: NY Office of Court Administration Attorney Registration · as of September 2026. Derived local rank, not published upstream.
How Shannon compares to fellow Georgetown University Law Center alumni
Among the 8,074 Georgetown University Law Center graduates in the New York register, Shannon Casey O'Brien is longer-tenured than 37%.
11 years vs. Georgetown University Law Center alumni
Years since admission - 8,074 NY-registered alumni of this school
11 Top 63% higher than 37% of 8,074 fellow alumni
Each bar is a band; taller bars hold more fellow alumni. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.
Source NY Office of Court Administration, Attorney Registration · September 2026
Georgetown University Law Center's active-bar rate
Of Georgetown University Law Center's 11,693 alumni in the New York register, 73.5% currently hold "Currently registered" status, above the statewide average.
The 2015 admission class today
Of the 8,867 attorneys admitted to the New York bar in 2015, 93% are still "Currently registered" today, above the statewide average across all admission years.
Professional Details
- Status
- Currently registered
- Registration Number
- 5330998
- Year Admitted
- 2015 (11 yrs · mid-career)
- Judicial Department
- 3
- Next Registration
- Jun 2027
Location & Contact
- Company
- Charlesbank Capital Partners
- City
- Boston, MA
- ZIP Code
- 02116
- Phone
- (617) 619-5433
Education
Status Distribution Across the New York Bar
Shannon Casey O'Brien's current status, "Currently registered", places this attorney in the 67.2% of the 432,625-attorney New York register currently marked active.
Full statewide breakdown & source note
Source: NY Office of Court Administration, Attorney Registrations. Status counts reflect the latest reporting cycle. Bar status confirms registration only; it does not imply competence, specialty fit, or freedom from complaints.
Same firm affiliation: Charlesbank Capital Partners
Other NY-registered attorneys who share this firm name on the OCA register (not a geographic peer set).
Near-tenure Georgetown University Law Center alumni
Fellow alumni on the NY register whose admission year is closest to 2015 (excluding same-firm colleagues above).
Same admission year (2015), other cities
NY-registered attorneys admitted in 2015 whose listed office city differs from Boston, a vintage cohort, not a neighborhood list.
Nationwide attorneys with similar admission year or city registry density
Two non-geo peer axes for Shannon Casey O'Brien: closest NY bar admission year outside MA, and closest out-of-state office cities by how many NY-registered attorneys they list (~2,913 here). Distinct from same-firm, fellow-alumni, and same-year other-city strips above.
Similar admission year (~2015)
Counts come from the NY State Office of Court Administration registration extract; peers are not a competence or practice-area ranking.
Verify This Attorney
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Compare attorneys →Before you rely on this record
Shannon Casey O'Brien's "Currently registered" listing confirms bar standing only, it is a registration fact to verify, not a verdict on quality or competence.
Frequently Asked Questions
Where is Shannon O'Brien licensed?
Shannon O'Brien is licensed to practice law in New York.
When was Shannon Casey O'Brien admitted to the bar?
Shannon Casey O'Brien has been on the New York bar register since 2015.
Where did Shannon Casey O'Brien go to law school?
Shannon Casey O'Brien attended Georgetown University Law Center.
What company does Shannon Casey O'Brien work for?
Shannon Casey O'Brien is associated with Charlesbank Capital Partners in Boston, MA.
Is Shannon Casey O'Brien in good standing?
Yes, Shannon Casey O'Brien holds active bar status ("Currently registered").
Cite this page & disclosure
Sourced from the NY Office of Court Administration, informational only, not legal advice. Full disclosure.
Read our methodology - how this data is sourced, computed, and verified.